c a b e l l



` :witch-rates stent ffir s.

.stuiIing-box. G, it is surronndod by guttnperchn or other insnlnting material, ns represented by c, in fig. 1.v :the side of the stufling-box C I insert o. screw, n, so orrsnged thot it may be screwed in or cut, and thus con- -sz G. cABnLL. (OF:oUiNc.Y1LL1No1s.- Letters Patent Na. 71,451, dotad 28, 1867.

,IHPBOVEMBNT IN PBVENTNG INOBU STTION OF STEAM BOILEBS.

Ole-.

eiz snow mnie nn :po szum W no inne mi monet TO ALL WHOM IT MY CONCEBN: p

Bo it known thet I, S. G. OABELL, of Quinoy, in .the county of Adonis, end Stete of Illinois, hnve inveinted certoin new end useful improvcmcnts in the application of Electrical Devices to Boilers'; end I do hereby declorelthut the following is e full, clear, o'nd exect description thereof, reference being had to' the accompnnying drswings, muking` part of this specificetion, end to the letters of reference merlredthercon lihelettcrs indicsting like parts wherover they occur. z v

' l'o epuble others skillcd in the ai't to construct end nse my inv'cntion, I will proceed to delcrihe it.

My invention consists in o novel construction und epplicetion of megnets to eteam-hoilers, for the threcfold .purpose of proventing incrustntion, removing scele, and conveying electrioity from stesm-boilers.

.Figurc 1 is n longitudinel -verticul scction of o steem-hoiler with my-epperetus applied thereto, end Figure 2 is o' view of 'portion dctached.'

As it is known thot the introduction of megnets into boilers prevents the deposit of the usnel incrustetion thcrein, und the-t the nppliootionof en electro-magnct 'to e'boiler hes the effect of ioose'ning end removing the' seslo or incrustntion thesefrom, I will proceed Aet once to descrihe my improved npporatns used for these pnr' poscs, and which constitutcs my invention in the present case.

A' represents o hoiJer, upon which I secure one or more stufling-boxes, O, directly over holcs made in the shell of the-hoiler, ns shown in fig; 1. I provide u oonple of electro-mognets, B, consisting of s. coil'of insuloted wire wound upon o. core, end preferobly enclosed by en outer metellic case, ss shown. The core a of these mngnots I make much-'longer then the heli, ond extend itp down though the stufing-box C into the hoilcr, where it has nttschod to its lower end s. transverse metollio rod or her, D, terminsting et each end in o serics of points, i; the rod 'D being represented` dotnhed in fig. 2. When the core a passes through the In ncct the core a, end consequently the mngnet, with the onter portion of 'thestnifing-box, und there-by vwith tho- 'sheli of the boiler A'nt will, or by removing' the scrcw from contact with the core themognet me'y be left insulnte'l from the boilcr when desired'; or, in lieu of the screws nlnwircu, may be connected with the outer end'.

of the cloctro-msgnet B, nml have its other 'end connected to the exterior of the Shell, es'represented in fig. 1, for eccomplishing these results. The core'a and its rod D mny he mode of soft iron, as nsuel in electrom'ogncts, or they may he made ofisteel, in which case they will become Permanent mugnets when oncepherged g or, if preferrcd, the 'core a may bo mode of soft iron end the rod D v.of steel, in which ca'se the letter only will become o pcrmnnent mog'net. By -these means I umenabled to have 'e Permanent magnet stell times within. the I boil'er, and may h ovo it either connected therewith or insulated thorefrom ut will to prevent incrustaticn. If

it ho dcsired' to remove the scnle, the electro-magnets B msy be connected to h battery, as shown, by connectv. ing the wires m, and stteohing their opp'osito ends k und h to the opposite' poles of the battery. I By tnrning tho scrcn's n in, the mognets' will hconnected withthe shell of the hoiler, by which. m'eens the scslo will he loos'oncd or rcmoved. By turning the screwe n so as to bre'alt the connection with the hoiler the, battery mey -bn need in connection nith'tho permon'ent mngnots D, orwitn the rods D, in cese the letter are not perman'ont'magnetnmd thus here the application of the efl'ective force within the boiler, while'the cois themselves o o're located outside of the boiler end entirely insuloted therefrom; ondwithout the use'ofeny tcem-dome or chamhor, as in iny formr application. For the purpose of coneying ewoy fromfthe hoiler eny surplpus elec- -tricity 4tlnit mny oxist thercin from snycouse, I provide the clectro-mchet B with thepoints t, to which wires l my hi' nttochiL-ondood from theme; to the ground, or here ground connection in sny suitable menn'er.

By this construction und orrungement of the devices I nmv ennhled to apply either! permenent or el tromnguets, or both together, to steem-hoilers, in a most simple find vcfxicient. menner, end at the seme ti hev'e them-so orrnnged thst .thoymey bo connected' to or disconnocted from the shell of the boller et will; und et the' e'enrc time have the oleotro-mognets locetod' outside of the' boilcrs irherethcycon be got et etony time, without inoonvenionc'c.

Huing thnl deloribod my'invontionrwhnt I chim', 1|-

1. The combination ith a nenm-boiler of ;n olooti'o-mqnet, applied oxtu'nnlly I I sn nivingltsveoffe'ktcndi in; within the boilor and inlnlntod thorefrom, lubs'tntinlly na ducribedz i. In cmnbinlgion with nn olgotro-msgnt oonstrixotedvsnd nppl'id to l -'boiler u ;lego

of, the lcreviu a or wirol u for making or brolkig connection with the boiler-sholl'nt will 8. In combination with nn oIutro-lnngnet nppiimi externnlly, I claim the use of n per intel-nelly to the hoiler, u horiin delorib'od.

. r '8. G. cABELL. Wilnosaesz i H. B. Munn,

Wi G. Down.

ribed, I chiln the use un set forth. manent mngnet applied 

